If I my step in. I am new to anything to do with laser. I am coming from the cnc world. I have a RDC8445S in a LM 1390-1 and have LB 2.1 Pro (just installed it) How / where do I.. Adjust N,Y,Z step distances? I asked LB to find my laser and it did not find it. I found that you could add manually…

Did not say it right. On start up, the machine goes home and learns where it is in the world. As in. Machine X - Y 0.0. CNC machines do the same thing. Then it goes for a walk across the table. This is the part I am looking into. Z only moves when you tell it too. A safety thing. Thanks for the…

[image] Honefoss_Laser: Putting a square logo on a tapered mug / glass That may be a solved problem: [image] Taper Warp - LightBurn User Guide LightBurn's Taper Warp tool assists in rotary engravings on tapered objects by adjusting graphics to compensate for the difference in dia…

Ya. You are right about the User origin. Just not used to having my machine doing this. Learning curve.

Thanks for the links. I got it working with the wifi and did some playing around to get the Z to work. They had the Z setting about 500 times to high. ?? I setup a simple box with our company name inside. Fill path first and cut path second. It would try to do the cut first. I cleared the control…

[image] Honefoss_Laser: It would try to do the cut first Devote some time to pondering the various Optimization settings: [image] Optimization Settings - LightBurn User Guide LightBurn's Cut Planner controls the order in which your laser cuts or engraves graphics in your project.…

[image] jkwilborn: it goes to wherever it’s set in the return position options I had to try that out … The Machine Settings has three choices: [LightBurn - KT332N Return Position] Which don’t match the four choices on the machine display: ABS position Not return Origin pos Docking point …

Thanks for all the links and info. This forced shift from cnc to laser has been a #¤%“&#/&”¤#%- Seeing it today working / doing something was a storm leaving my brain. Will look into the ABS and the other now that it runs.

[image] Honefoss_Laser: forced shift from cnc to laser It requires a different mindset, particularly with Ruida controllers that do not use G-Code and do not work like CNC machines: trying to force-fit the machine and LightBurn to your CNC-ish preconceptions will only result in heartbreak & c…

Yap.. Me and my dyslexia not saying things right. Forced shift. My retirement was setup too use the cnc router machine I built to make, signs, plaques, 3D models and anything else. When a Acoustic Neuroma woke up and almost killed me. My world went to “¤”¤"&#¤%&. (Doctors miss diagnose it all the…

[image] Honefoss_Laser: You used pins at center line to line up backside That’s the right idea: put the parts in a precisely located fixture. A laser’s lack of cutting force means you can use cardboard / chipboard / MDF : [image] You can align th…

Have a RDC8445S - How / where do I.. Adjust N,Y,Z step distances?

LightBurn Hardware Compatibility Ruida controllers

ednisley (Ed Nisley) August 3, 2026, 5:38pm 27

These will be relevant:

If you’re not using LightBurn 2.1.03, now’s the time to start.

As I mentioned earlier, you should use an Ethernet connection to avoid much heartache & confusion. If it still misbehaves with a direct cable between the PC and the controller, then you have eliminated all the other network communications problems and can concentrate on the controller’s quirks.

Assuming you’re using 2.1 with a direct cable, then start an exchange with support@lightburnsoftware.com including a link to this topic, because they’re the best help you’ll get with that controller. The rest of us are basically useless, because that controller is the New Hotness.